HANG TIME HEADQUARTERS — Miami Heat guard Josh Richardson is out indefinitely after tearing the medial collateral ligament in his right knee during a workout with teammates earlier today, as first reported by The Vertical.

It’s a tough blow for a Heat team that was counting on Richardson to contribute even more than he did during a somewhat surprising rookie campaign for a team that made the Eastern Conference semifinals last season.

Richardson, the Eastern Conference Rookie of the Month in March, could be back in time for the start of the season. But the Heat won’t know for sure until the severity of his injury is determined.

Richardson averaged 6.6 points and 1.4 assists in 52 games last season and shot 46.1 percent from beyond the 3-point line in 52 games. With All-Star shooting guard Dwyane Wade gone to Chicago in free agency, Richardson is expected to battle for playing time with Dion Waiters, Wayne Ellington, Tyler Johnson and Been Udrih in a revamped Heat backcourt alongside starting point guard Goran Dragic.